rarejob.com

https://rarejob.com· First analyzed 19 May 2026· Updated 19 May 2026

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rarejob.com

Mobile

Sponsored

Hosting Provider

Amazon Web Services (AWS)

aws.amazon.com

IP Address

57.181.8.141

Site Location

🇯🇵 渋谷区, Japanvia schema_nap

Server Location

🇯🇵 Tokyo, Japan

ASN

AS16509

Organization

AWS EC2 (ap-northeast-1)

Server

Apache

Nameservers

ns-698.awsdns-23.net.ns-7.awsdns-00.com.ns-1058.awsdns-04.org.ns-1684.awsdns-18.co.uk.

Performance

Core Web Vitals

Weight

First Contentful Paint

1.5 s10%

Speed Index

1.9 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

141 KB

103 requests

Image Optimization

Lazy LoadWebPResponsive

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Amazon Web Services (AWS)

Technology Stack

14 Technologies Detected

Analytics

Google Analytics

Google Analytics 4

Facebook Pixel Microsoft Clarity

Advertising

Google Ads TikTok Pixel Microsoft Advertising

Libraries

Other

CSS Frameworks

Icon Libraries

Fonts

Tag Managers

Web Servers

SEO Analysis

B76/100

Meta Tags12/15

Content12/12

Headings3/8

Technical23/25

E-E-A-T2/7

Images3/7

Links5/5

URL5/5

Social4/5

Freshness0/4

Mobile4/4

Indexability3/3

rarejob.comrarejob.com

オンライン英会話ならレアジョブ英会話 | 無料トライアルレッスン実施中

会員数120万人以上のオンライン英会話ならレアジョブ英会話。会員登録で7日間の無料トライアルレッスンと日本人講師によるカウンセリングが受けられます。多国籍講師が在籍。初心者から上級者まで「日常英会話」「ビジネス英会話」をマンツーマンレッスンで学べます。

Title Length35 chars

Recommended: 50-60 chars (~214px / 580px)

Description Length126 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (30/55) — critical for accessibility and SEO

6 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

8,088 URLs

robots.txt

10 rules

Local SEO

Local Search Readiness

27/100

Needs Work

7 13

Sponsored

AI & LLM Readiness

D53/100

Bot Access

20/25

Machine Read.

14/25

Schema Data

5/25

Citation

14/25

AI Bot Access

14/14 accessible

AI Search

OAI-SearchBot

PerplexityBot

Claude-SearchBot

Gemini-Deep-Research

DuckAssistBot

Training

GPTBot

ClaudeBot

Google-Extended

Meta-ExternalAgent

Bytespiderinfo

Amazonbot

Applebot-Extended

CCBotinfo

Fetch

ChatGPT-User

Machine Readability

llms.txt

llms-full.txt

Semantic HTML

Heading Hierarchy

def. listsnav

Text ratio:14%

Words:1,311

Token eff.:Optimal

Sections/1K:12.2

Depth:2/5

Structured Data

4 JSON-LD

Organization×1.1BreadcrumbList

sameAs entity links

Citation Readiness

Opening Summary25w

Descriptive Headingsavg 1w

Canonical URL

Open Graph3/3

Twitter Card1/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (6)

AI readiness recommendation preview...

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Sponsored

Accessibility

WCAG 2.1 Compliance

Evaluates how accessible your website is for users with disabilities, based on WCAG 2.1 guidelines. Checks images, forms, keyboard navigation, ARIA roles, and color contrast.

81/100

Passed

Critical

Warnings

Images & Alt Text

20/20

Checks if images have descriptive alt text for screen readers and visually impaired users.

Semantic Structure

20/20

Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.

Forms & Inputs

15/15

Verifies form fields have labels, error messages are clear, and inputs are properly associated.

Color & Contrast

15/15

Tests text-to-background color contrast ratios against WCAG AA/AAA minimum requirements.

Keyboard & Focus

9/15

Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).

ARIA & Roles

2/15

Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

2 recommendations

•Accessibility recommendation preview...

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Carbon Footprint

SWDM v4 · Eco-Score

Carbon emissions estimated using the Sustainable Web Design Model v4 (SWDM v4). Factors in data center, network, and device energy across new and returning visitors. Grade thresholds based on HTTP Archive percentiles.

74/100

A+

14 mg

CO₂e / view

140.6 KB

Page Weight

95%

Cleaner Than

New Visitor

16 mg

Returning (cached)

8 mg

Annual (10K/mo)

1.7 kg

Emission Segments

Data Center

<0.001 g

Network

4 mg

Device

9 mg

Resource Breakdown

JavaScript

81.2 KB

Images

1.0 KB

CSS

26.3 KB

Fonts

638 B

HTML

30.7 KB

Other

815 B

Green Hosting Verified

Amazon Web Services (AWS)

Provider Match

4 recommendations

•Carbon footprint recommendation preview...

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Security Score

56%Poor

Interactive

HTTPS

No WAF

144d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Amazon

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/2

Valid From

27.03.2026

Valid Until

10.10.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.rarejob.comrarejob.com

SHA-256 Fingerprint

0F:9F:5E:7D:F5:1F:19:DB:34:C5:78:BA:8D:C6:F4:4C:5A:FF:9A:4B...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

cache-control

🔴 No Cache(no-store, no-cache, must-revalidate, post-check=0, pre-check...)

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=UTF-8

date

Tue, 19 May 2026 22:17:01 GMT

expires

Thu, 19 Nov 1981 08:52:00 GMT

pragma

no-cache

Good Warning Issue

Email Infrastructure

Google Workspace

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (5)

alt2.aspmx.l.google.com

aspmx.l.google.com

alt3.aspmx.l.google.com

alt4.aspmx.l.google.com

+1 more

Domain Information

rarejob.com

Domain Age

20y 5m

Created

20.12.2005

Expires

20.12.2026

Last Updated

19.11.2025

Registrar

GMO Internet Group, Inc. d/b/a Onamae.com

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Mobile Compatibility

Viewport & Responsive Test

Tests how well your website works on mobile devices. Checks viewport configuration, responsive layout, touch targets, font readability, and simulates rendering across different screen sizes.

54/100

Mobile Friendly1 breakpoint

Viewport Meta

The viewport meta tag tells mobile browsers how to scale the page. Without it, mobile devices render at desktop width.

Responsive Design

Uses CSS media queries or flexible layouts to adapt content to different screen sizes automatically.

Touch Icons

Apple touch icons and favicons displayed when users add the site to their home screen on mobile devices.

Readable Font Size

Base font size should be at least 16px on mobile to ensure text is readable without zooming.

Relative Units

Using em, rem, %, or vw instead of fixed px values allows content to scale properly across screen sizes.

No H-Scroll Risk

No elements wider than the viewport that would cause horizontal scrolling on mobile devices.

Tap Targets OK

Interactive elements (buttons, links) are at least 48x48px with enough spacing to prevent accidental taps.

No Fixed Widths

No elements with fixed pixel widths that could overflow on smaller screens and break the layout.

Viewport

width=device-width,user-scalable=no,maximum-scale=1

2 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Arial

WCAG Partial

61/100

Readability

/30

16/30

16px · LH 2.00

Hierarchy

/20

13/20

1.75x ratio · ✓ H1→H6

WCAG

/25

10/25

2.44:1 min contrast

Performance

/25

22/25

System fonts

Heading Font

Arial

Sans28px

Body Font

Arial

Sans16px

Contrast Ratio

2.44:1

4 issues

Reading Comfort

~39 CPL

Narrow lines

28px

40px

24px

16px

Minor Second

Scale

✅ Excellent readability: 16px body text is ideal for all devices.

⚠️ Wide line spacing (2.00). 1.4–1.6 is optimal for body text.

❌ Very complex text: Flesch score 0/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 4 elements below WCAG AA threshold (min 2.4:1).

✅ Perfect heading hierarchy: Sequential h1→h2→h3 with single H1 — ideal for SEO & accessibility.

❌ Pure vw font sizes: Viewport units alone break browser zoom (WCAG 1.4.4 fail). Use clamp(rem, vw, rem).

GGoogle FontsFlesch 0

Color Palette

9 unique colors

Light

#ffffff

Background· 34.49999999999999%

#fbf6df

Primary· 18.3%

#6baa91

Secondary· 6.2%

#303b41

Secondary· 6.1%

#b6812e

Accent· 5.5%

#c8b192

Secondary· 5.1%

#bcd3bb

Secondary· 4.7%

#ede5c6

Accent· 4.2%

Business & Marketing Stack

7 Tools Detected

Enterprise

Behavior Analytics

Google Tag ManagerFree

Google AnalyticsFree

Microsoft ClarityFree

User behavior and product analytics

Advertising

Facebook PixelMid-Market

TikTok PixelMid-Market

Microsoft AdsEnterprise

Ad platforms and retargeting pixels

Social Media

Facebook SDKFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

22 Resources

Scripts

Styles

Async

Defer

Top Script Sources

googletagmanager.com(8)analytics.tiktok.com(3)connect.facebook.net(3)dmp.im-apps.net(2)clarity.ms(2)

Website Identity

レアジョブ英会話オンライン英会話英会話オンライン英語日常英会話ビジネス英会話オンライン英会話無料体験オンライン英会話初心者英会話レッスン

Thing

オンライン英会話なら会員数100万人のレアジョブ英会話。英会話初心者でも安心！無料体験レッスンが2回お試しできます。PCやタブレット、スマホアプリでレッスンも可能。「日常英会話」「ビジネス英会話」「発音」等、様々な教材で学べます。

0354687401

www.rarejob.com

20 years old

神宮前6-27-8京セラ原宿ビル2階, 渋谷区

150-001, 渋谷区, 東京都

Location detected: 🇯🇵 Japan, 渋谷区via schema_nap

GMO Internet Group, Inc. d/b/a Onamae.com📧 Google Workspaceja

Social Profiles

Facebook X (Twitter)Instagram TikTok

Sponsored

Last analyzed: 19 May 2026 at 22:17

Historical Analysis & Change Tracking

rarejob.com

オンライン英会話ならレアジョブ英会話 | 無料トライアルレッスン実施中

Accessibility

Carbon Footprint

Mobile Compatibility

Color Palette

レアジョブ英会話オンライン英会話英会話オンライン英語日常英会話ビジネス英会話オンライン英会話 無料体験オンライン英会話 初心者英会話 レッスン

レアジョブ英会話オンライン英会話英会話オンライン英語日常英会話ビジネス英会話オンライン英会話無料体験オンライン英会話初心者英会話レッスン